Chevron's oil leak

Rio de Janeiro's state environment secretary Carlos Minc, talks with journalists about Chevron's oil leak in an offshore field, Rio de Janeiro, Brazil, March 21, 2012. (Austral Foto/Renzo Gostoli)

Rio de Janeiro's state environment secretary Carlos Minc, talks with journalists about Chevron's oil leak in an offshore field, Rio de Janeiro, Brazil, March 21, 2012. (Austral Foto/Renzo Gostoli)

Rio de Janeiro's state environment secretary Carlos Minc, talks with journalists about Chevron's oil leak in an offshore field, Rio de Janeiro, Brazil, March 21, 2012. (Austral Foto/Renzo Gostoli)

Rio de Janeiro's state environment secretary Carlos Minc, talks with journalists about Chevron's oil leak in an offshore field, Rio de Janeiro, Brazil, March 21, 2012. (Austral Foto/Renzo Gostoli)